QUAD S series is a high-fidelity loudspeaker system designed to provide an accurate and immersive listening experience. Each model in the range features a sophisticated crossover network that separates the treble and bass frequencies into two distinct sections, each connected by a dedicated pair of terminal posts. This enables the treble and bass components to be separately driven for optimum performance.

The loudspeakers are designed to be positioned between two and three meters apart and equidistant from the listening position. The tweeters should be roughly at ear level to a seated listener. The loudspeakers should be positioned so that they are angled slightly inward, facing the listener.